[MPP] Add LC_ALL to CocoaPods IT

^KT-60394

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CocoaPodsXcodeIT.kt

@@ -18,6 +18,7 @@ import java.nio.file.Path
 import kotlin.io.path.exists
 import kotlin.io.path.name
 import kotlin.test.assertEquals
+import kotlin.test.assertTrue
 import kotlin.test.fail
 
 @OsCondition(supportedOn = [OS.MAC], enabledOnCI = [OS.MAC])
@@ -256,20 +257,14 @@ private fun TestProject.gradlePodInstall(taskPrefix: String, @Suppress("UNUSED_P
 private fun TestProject.manualPodInstall(taskPrefix: String, iosAppPath: Path) {
     build("$taskPrefix:$DUMMY_FRAMEWORK_TASK_NAME", buildOptions = buildOptions)
 
-    val command = listOf("env", "pod", "install")
-    val result = runProcess(
-        cmd = command,
-        environmentVariables = environmentVariables.environmentalVariables,
-        workingDir = iosAppPath.toFile(),
-    )
+    val environmentalVariables = environmentVariables.environmentalVariables.toMutableMap()
+    environmentalVariables.getOrPut("LC_ALL") { "en_US.UTF-8" }
 
-    if (result.exitCode != 0) {
-        fail(
-            """
-            |${command.joinToString(" ")} failed with exist code ${result.exitCode}
-            |stdout: ${result.output}
-            |stderr: ${result.stdErr}
-            """.trimMargin()
+    assertProcessRunResult(
+        runProcess(
+            cmd = listOf("env", "pod", "install"),
+            environmentVariables = environmentalVariables,
+            workingDir = iosAppPath.toFile(),
         )
-    }
+    ) { assertTrue(isSuccessful) }
 }